/*
 * Copyright (C) 2011 David Bigagli
 * Copyright (C) 2007 Platform Computing Inc
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 *
 */
#include <errno.h>
#include <unistd.h>


#define SYSV_NICE_0              20
#define MAX_PRIORITY             20
#define MIN_PRIORITY            -20

#define LSF_TO_SYSV(x)          ((x) + SYSV_NICE_0)
#define SYSV_TO_LSF(x)          ((x) - SYSV_NICE_0)

int
ls_setpriority (int newPriority)
{
  int increment;

  if (newPriority > MAX_PRIORITY * 2)
    {
      newPriority = MAX_PRIORITY * 2;
    }
  else if (newPriority < MIN_PRIORITY * 2)
    {
      newPriority = MIN_PRIORITY * 2;
    }
  increment = newPriority;

  errno = 0;


  if (-1 == nice (increment) && (0 != errno))
    {
      return 0;
    }

  return 1;
}
